Improvement in cutters for tonguing and grooving



ituitrd gratte .To allwhom t may concern! `1 Beit known that I, OALEB IBROBST, of Winamae, in theeounty of Pulaski and inthe State 'of Indiana, have invented certain-new and useful Improvements in Sawsfor Tongue tandfG:i'ooving-v Lumber; and` do hereby declare that the followin gis a full7 clear, and exact .description tl 1ere`of,greference being had to the accompanying'drawing and tot lettersof refereneen'iarked thereon making aipnrtof his specification;

` vThe natureof `my n ntion consists in the conl struct-ion ofsawsibrleutting tongues and grooves in lumber, as willrbe leremafter fully setiforth.l

l l my invention appertains to `make anduse'thie same, I will now proceed to. describey its construction and opl erationrreferringsto the annexed 'drawingftvhich repl'esents a perspective viewof a frame, \vitha1nandrels Inthe drawing, I have-1epresented a frame, A, merely to show the mandrels B -B,upon` which my saws D D are secured. l

Each saw'is made of three plates, a, a, and b, each having six teeth, andpiaced on top-'of each other, `and firmly riveted, or `otherwise secured, together.- T-hetwo plates an are of exactly the same size and.

Letters Patent Nb. 105,417, dazed .my 1e, 1870.

shape, and placed one oneach side of the third sawplate, b. l

The teeth on this plate b are made either larger or smaller than the teeth on the plates a a, so as either to iprojeot beyond them, or allow the teeth on the plates a to project beyond the teeth on the plate b, enabling the saws to cut either groovesor tongues.

These saws are far superior to the usual head and knives in dressing all kinds of flooring and wide lumber. Theisaws willdress knotty and cross-grain`lum ber smooth, where the knives will tear ont and lmake `rough lumber. c

. Having thus fully described my invention, 'What I claim as new, and desire to secure by Let ters Patent, is- 4 The cutter-heads C and G', composed of the cutters a b a, when all the parts are constructed and' arranged in the manner shown and'deseribed, and for the purposes yset forth.

In testimony thatI claim the foregoing, I have hereunto set my hand this 20th day of November, 1869.

CALEB BROBS'I` Witnesses: 1

WrLLiAM B. JENKINS, FnANcIs M. HARRIS.

' eiwit @Wina N 

